Commit | Line | Data |
---|---|---|
d56410e0 | 1 | /* |
1da177e4 LT |
2 | * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1 |
3 | * | |
4 | * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/slab.h> | |
26 | ||
27 | #include <linux/byteorder/swab.h> | |
28 | ||
29 | #include <asm/io.h> | |
30 | #include <asm/uaccess.h> | |
31 | ||
32 | #include <linux/i2c.h> | |
1da177e4 LT |
33 | |
34 | #define I2C_NAME(x) (x)->name | |
35 | ||
36 | #include <linux/videodev.h> | |
37 | #include <linux/video_decoder.h> | |
38 | ||
39 | #define I2C_VPX3220 0x86 | |
40 | #define VPX3220_DEBUG KERN_DEBUG "vpx3220: " | |
41 | ||
42 | static int debug = 0; | |
43 | module_param(debug, int, 0); | |
44 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
45 | ||
46 | #define dprintk(num, format, args...) \ | |
47 | do { \ | |
48 | if (debug >= num) \ | |
49 | printk(format, ##args); \ | |
50 | } while (0) | |
51 | ||
52 | #define VPX_TIMEOUT_COUNT 10 | |
53 | ||
54 | /* ----------------------------------------------------------------------- */ | |
55 | ||
56 | struct vpx3220 { | |
57 | unsigned char reg[255]; | |
58 | ||
59 | int norm; | |
60 | int input; | |
61 | int enable; | |
62 | int bright; | |
63 | int contrast; | |
64 | int hue; | |
65 | int sat; | |
66 | }; | |
67 | ||
68 | static char *inputs[] = { "internal", "composite", "svideo" }; | |
69 | ||
70 | /* ----------------------------------------------------------------------- */ | |
71 | static inline int | |
72 | vpx3220_write (struct i2c_client *client, | |
73 | u8 reg, | |
74 | u8 value) | |
75 | { | |
76 | struct vpx3220 *decoder = i2c_get_clientdata(client); | |
77 | ||
78 | decoder->reg[reg] = value; | |
79 | return i2c_smbus_write_byte_data(client, reg, value); | |
80 | } | |
81 | ||
82 | static inline int | |
83 | vpx3220_read (struct i2c_client *client, | |
84 | u8 reg) | |
85 | { | |
86 | return i2c_smbus_read_byte_data(client, reg); | |
87 | } | |
88 | ||
89 | static int | |
90 | vpx3220_fp_status (struct i2c_client *client) | |
91 | { | |
92 | unsigned char status; | |
93 | unsigned int i; | |
94 | ||
95 | for (i = 0; i < VPX_TIMEOUT_COUNT; i++) { | |
96 | status = vpx3220_read(client, 0x29); | |
97 | ||
98 | if (!(status & 4)) | |
99 | return 0; | |
100 | ||
101 | udelay(10); | |
102 | ||
103 | if (need_resched()) | |
104 | cond_resched(); | |
105 | } | |
106 | ||
107 | return -1; | |
108 | } | |
109 | ||
110 | static int | |
111 | vpx3220_fp_write (struct i2c_client *client, | |
112 | u8 fpaddr, | |
113 | u16 data) | |
114 | { | |
115 | /* Write the 16-bit address to the FPWR register */ | |
116 | if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) { | |
117 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
118 | return -1; | |
119 | } | |
120 | ||
121 | if (vpx3220_fp_status(client) < 0) | |
122 | return -1; | |
123 | ||
124 | /* Write the 16-bit data to the FPDAT register */ | |
125 | if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) { | |
126 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
127 | return -1; | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | static u16 | |
134 | vpx3220_fp_read (struct i2c_client *client, | |
135 | u16 fpaddr) | |
136 | { | |
137 | s16 data; | |
138 | ||
139 | /* Write the 16-bit address to the FPRD register */ | |
140 | if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) { | |
141 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
142 | return -1; | |
143 | } | |
144 | ||
145 | if (vpx3220_fp_status(client) < 0) | |
146 | return -1; | |
147 | ||
148 | /* Read the 16-bit data from the FPDAT register */ | |
149 | data = i2c_smbus_read_word_data(client, 0x28); | |
150 | if (data == -1) { | |
151 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
152 | return -1; | |
153 | } | |
154 | ||
155 | return swab16(data); | |
156 | } | |
157 | ||
158 | static int | |
159 | vpx3220_write_block (struct i2c_client *client, | |
160 | const u8 *data, | |
161 | unsigned int len) | |
162 | { | |
163 | u8 reg; | |
164 | int ret = -1; | |
165 | ||
166 | while (len >= 2) { | |
167 | reg = *data++; | |
168 | if ((ret = | |
169 | vpx3220_write(client, reg, *data++)) < 0) | |
170 | break; | |
171 | len -= 2; | |
172 | } | |
173 | ||
174 | return ret; | |
175 | } | |
176 | ||
177 | static int | |
178 | vpx3220_write_fp_block (struct i2c_client *client, | |
d56410e0 MCC |
179 | const u16 *data, |
180 | unsigned int len) | |
1da177e4 LT |
181 | { |
182 | u8 reg; | |
183 | int ret = 0; | |
184 | ||
185 | while (len > 1) { | |
186 | reg = *data++; | |
187 | ret |= vpx3220_fp_write(client, reg, *data++); | |
188 | len -= 2; | |
189 | } | |
190 | ||
191 | return ret; | |
192 | } | |
193 | ||
194 | /* ---------------------------------------------------------------------- */ | |
195 | ||
196 | static const unsigned short init_ntsc[] = { | |
197 | 0x1c, 0x00, /* NTSC tint angle */ | |
198 | 0x88, 17, /* Window 1 vertical */ | |
199 | 0x89, 240, /* Vertical lines in */ | |
200 | 0x8a, 240, /* Vertical lines out */ | |
201 | 0x8b, 000, /* Horizontal begin */ | |
202 | 0x8c, 640, /* Horizontal length */ | |
203 | 0x8d, 640, /* Number of pixels */ | |
204 | 0x8f, 0xc00, /* Disable window 2 */ | |
9b3acc21 | 205 | 0xf0, 0x73, /* 13.5 MHz transport, Forced |
1da177e4 LT |
206 | * mode, latch windows */ |
207 | 0xf2, 0x13, /* NTSC M, composite input */ | |
208 | 0xe7, 0x1e1, /* Enable vertical standard | |
209 | * locking @ 240 lines */ | |
210 | }; | |
211 | ||
212 | static const unsigned short init_pal[] = { | |
213 | 0x88, 23, /* Window 1 vertical begin */ | |
9b3acc21 | 214 | 0x89, 288, /* Vertical lines in (16 lines |
1da177e4 | 215 | * skipped by the VFE) */ |
9b3acc21 | 216 | 0x8a, 288, /* Vertical lines out (16 lines |
1da177e4 LT |
217 | * skipped by the VFE) */ |
218 | 0x8b, 16, /* Horizontal begin */ | |
219 | 0x8c, 768, /* Horizontal length */ | |
220 | 0x8d, 784, /* Number of pixels | |
221 | * Must be >= Horizontal begin + Horizontal length */ | |
222 | 0x8f, 0xc00, /* Disable window 2 */ | |
9b3acc21 | 223 | 0xf0, 0x77, /* 13.5 MHz transport, Forced |
1da177e4 LT |
224 | * mode, latch windows */ |
225 | 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */ | |
9b3acc21 | 226 | 0xe7, 0x241, /* PAL/SECAM set to 288 lines */ |
1da177e4 LT |
227 | }; |
228 | ||
229 | static const unsigned short init_secam[] = { | |
9b3acc21 RB |
230 | 0x88, 23, /* Window 1 vertical begin */ |
231 | 0x89, 288, /* Vertical lines in (16 lines | |
1da177e4 | 232 | * skipped by the VFE) */ |
9b3acc21 | 233 | 0x8a, 288, /* Vertical lines out (16 lines |
1da177e4 LT |
234 | * skipped by the VFE) */ |
235 | 0x8b, 16, /* Horizontal begin */ | |
236 | 0x8c, 768, /* Horizontal length */ | |
237 | 0x8d, 784, /* Number of pixels | |
238 | * Must be >= Horizontal begin + Horizontal length */ | |
239 | 0x8f, 0xc00, /* Disable window 2 */ | |
9b3acc21 | 240 | 0xf0, 0x77, /* 13.5 MHz transport, Forced |
1da177e4 LT |
241 | * mode, latch windows */ |
242 | 0xf2, 0x3d5, /* SECAM, composite input */ | |
9b3acc21 | 243 | 0xe7, 0x241, /* PAL/SECAM set to 288 lines */ |
1da177e4 LT |
244 | }; |
245 | ||
246 | static const unsigned char init_common[] = { | |
247 | 0xf2, 0x00, /* Disable all outputs */ | |
248 | 0x33, 0x0d, /* Luma : VIN2, Chroma : CIN | |
249 | * (clamp off) */ | |
250 | 0xd8, 0xa8, /* HREF/VREF active high, VREF | |
251 | * pulse = 2, Odd/Even flag */ | |
252 | 0x20, 0x03, /* IF compensation 0dB/oct */ | |
253 | 0xe0, 0xff, /* Open up all comparators */ | |
254 | 0xe1, 0x00, | |
255 | 0xe2, 0x7f, | |
256 | 0xe3, 0x80, | |
257 | 0xe4, 0x7f, | |
258 | 0xe5, 0x80, | |
259 | 0xe6, 0x00, /* Brightness set to 0 */ | |
260 | 0xe7, 0xe0, /* Contrast to 1.0, noise shaping | |
261 | * 10 to 8 2-bit error diffusion */ | |
262 | 0xe8, 0xf8, /* YUV422, CbCr binary offset, | |
263 | * ... (p.32) */ | |
264 | 0xea, 0x18, /* LLC2 connected, output FIFO | |
265 | * reset with VACTintern */ | |
266 | 0xf0, 0x8a, /* Half full level to 10, bus | |
267 | * shuffler [7:0, 23:16, 15:8] */ | |
268 | 0xf1, 0x18, /* Single clock, sync mode, no | |
269 | * FE delay, no HLEN counter */ | |
270 | 0xf8, 0x12, /* Port A, PIXCLK, HF# & FE# | |
271 | * strength to 2 */ | |
272 | 0xf9, 0x24, /* Port B, HREF, VREF, PREF & | |
273 | * ALPHA strength to 4 */ | |
274 | }; | |
275 | ||
276 | static const unsigned short init_fp[] = { | |
277 | 0x59, 0, | |
278 | 0xa0, 2070, /* ACC reference */ | |
279 | 0xa3, 0, | |
280 | 0xa4, 0, | |
281 | 0xa8, 30, | |
282 | 0xb2, 768, | |
283 | 0xbe, 27, | |
284 | 0x58, 0, | |
285 | 0x26, 0, | |
286 | 0x4b, 0x298, /* PLL gain */ | |
287 | }; | |
288 | ||
289 | static void | |
290 | vpx3220_dump_i2c (struct i2c_client *client) | |
291 | { | |
292 | int len = sizeof(init_common); | |
293 | const unsigned char *data = init_common; | |
294 | ||
295 | while (len > 1) { | |
296 | dprintk(1, | |
297 | KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n", | |
298 | *data, vpx3220_read(client, *data)); | |
299 | data += 2; | |
300 | len -= 2; | |
301 | } | |
302 | } | |
303 | ||
304 | static int | |
305 | vpx3220_command (struct i2c_client *client, | |
306 | unsigned int cmd, | |
307 | void *arg) | |
308 | { | |
309 | struct vpx3220 *decoder = i2c_get_clientdata(client); | |
310 | ||
311 | switch (cmd) { | |
312 | case 0: | |
313 | { | |
314 | vpx3220_write_block(client, init_common, | |
315 | sizeof(init_common)); | |
316 | vpx3220_write_fp_block(client, init_fp, | |
317 | sizeof(init_fp) >> 1); | |
318 | switch (decoder->norm) { | |
d56410e0 | 319 | |
1da177e4 LT |
320 | case VIDEO_MODE_NTSC: |
321 | vpx3220_write_fp_block(client, init_ntsc, | |
322 | sizeof(init_ntsc) >> 1); | |
323 | break; | |
324 | ||
325 | case VIDEO_MODE_PAL: | |
326 | vpx3220_write_fp_block(client, init_pal, | |
d56410e0 | 327 | sizeof(init_pal) >> 1); |
1da177e4 LT |
328 | break; |
329 | case VIDEO_MODE_SECAM: | |
330 | vpx3220_write_fp_block(client, init_secam, | |
331 | sizeof(init_secam) >> 1); | |
332 | break; | |
333 | default: | |
334 | vpx3220_write_fp_block(client, init_pal, | |
d56410e0 | 335 | sizeof(init_pal) >> 1); |
1da177e4 LT |
336 | break; |
337 | } | |
d56410e0 | 338 | } |
1da177e4 LT |
339 | break; |
340 | ||
341 | case DECODER_DUMP: | |
342 | { | |
343 | vpx3220_dump_i2c(client); | |
344 | } | |
345 | break; | |
346 | ||
347 | case DECODER_GET_CAPABILITIES: | |
348 | { | |
349 | struct video_decoder_capability *cap = arg; | |
350 | ||
351 | dprintk(1, KERN_DEBUG "%s: DECODER_GET_CAPABILITIES\n", | |
352 | I2C_NAME(client)); | |
353 | ||
354 | cap->flags = VIDEO_DECODER_PAL | | |
355 | VIDEO_DECODER_NTSC | | |
356 | VIDEO_DECODER_SECAM | | |
357 | VIDEO_DECODER_AUTO | | |
358 | VIDEO_DECODER_CCIR; | |
359 | cap->inputs = 3; | |
360 | cap->outputs = 1; | |
361 | } | |
362 | break; | |
363 | ||
364 | case DECODER_GET_STATUS: | |
365 | { | |
366 | int res = 0, status; | |
367 | ||
368 | dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n", | |
369 | I2C_NAME(client)); | |
370 | ||
371 | status = vpx3220_fp_read(client, 0x0f3); | |
372 | ||
373 | dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client), | |
374 | status); | |
375 | ||
376 | if (status < 0) | |
377 | return status; | |
378 | ||
379 | if ((status & 0x20) == 0) { | |
380 | res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR; | |
381 | ||
382 | switch (status & 0x18) { | |
383 | ||
384 | case 0x00: | |
385 | case 0x10: | |
386 | case 0x14: | |
387 | case 0x18: | |
388 | res |= DECODER_STATUS_PAL; | |
389 | break; | |
390 | ||
391 | case 0x08: | |
392 | res |= DECODER_STATUS_SECAM; | |
393 | break; | |
394 | ||
395 | case 0x04: | |
396 | case 0x0c: | |
397 | case 0x1c: | |
398 | res |= DECODER_STATUS_NTSC; | |
399 | break; | |
400 | } | |
401 | } | |
402 | ||
403 | *(int *) arg = res; | |
404 | } | |
405 | break; | |
406 | ||
407 | case DECODER_SET_NORM: | |
408 | { | |
409 | int *iarg = arg, data; | |
de21eb63 RB |
410 | int temp_input; |
411 | ||
412 | /* Here we back up the input selection because it gets | |
413 | overwritten when we fill the registers with the | |
d56410e0 | 414 | choosen video norm */ |
de21eb63 | 415 | temp_input = vpx3220_fp_read(client, 0xf2); |
1da177e4 LT |
416 | |
417 | dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n", | |
418 | I2C_NAME(client), *iarg); | |
419 | switch (*iarg) { | |
420 | ||
421 | case VIDEO_MODE_NTSC: | |
422 | vpx3220_write_fp_block(client, init_ntsc, | |
423 | sizeof(init_ntsc) >> 1); | |
424 | dprintk(1, KERN_INFO "%s: norm switched to NTSC\n", | |
425 | I2C_NAME(client)); | |
426 | break; | |
427 | ||
428 | case VIDEO_MODE_PAL: | |
429 | vpx3220_write_fp_block(client, init_pal, | |
430 | sizeof(init_pal) >> 1); | |
431 | dprintk(1, KERN_INFO "%s: norm switched to PAL\n", | |
432 | I2C_NAME(client)); | |
433 | break; | |
434 | ||
435 | case VIDEO_MODE_SECAM: | |
436 | vpx3220_write_fp_block(client, init_secam, | |
437 | sizeof(init_secam) >> 1); | |
438 | dprintk(1, KERN_INFO "%s: norm switched to SECAM\n", | |
439 | I2C_NAME(client)); | |
440 | break; | |
441 | ||
442 | case VIDEO_MODE_AUTO: | |
443 | /* FIXME This is only preliminary support */ | |
444 | data = vpx3220_fp_read(client, 0xf2) & 0x20; | |
445 | vpx3220_fp_write(client, 0xf2, 0x00c0 | data); | |
446 | dprintk(1, KERN_INFO "%s: norm switched to Auto\n", | |
447 | I2C_NAME(client)); | |
448 | break; | |
449 | ||
450 | default: | |
451 | return -EINVAL; | |
452 | ||
453 | } | |
454 | decoder->norm = *iarg; | |
de21eb63 RB |
455 | |
456 | /* And here we set the backed up video input again */ | |
457 | vpx3220_fp_write(client, 0xf2, temp_input | 0x0010); | |
458 | udelay(10); | |
1da177e4 LT |
459 | } |
460 | break; | |
461 | ||
462 | case DECODER_SET_INPUT: | |
463 | { | |
464 | int *iarg = arg, data; | |
465 | ||
466 | /* RJ: *iarg = 0: ST8 (PCTV) input | |
467 | *iarg = 1: COMPOSITE input | |
468 | *iarg = 2: SVHS input */ | |
469 | ||
470 | const int input[3][2] = { | |
471 | {0x0c, 0}, | |
472 | {0x0d, 0}, | |
473 | {0x0e, 1} | |
474 | }; | |
475 | ||
476 | if (*iarg < 0 || *iarg > 2) | |
477 | return -EINVAL; | |
478 | ||
479 | dprintk(1, KERN_INFO "%s: input switched to %s\n", | |
480 | I2C_NAME(client), inputs[*iarg]); | |
481 | ||
482 | vpx3220_write(client, 0x33, input[*iarg][0]); | |
483 | ||
484 | data = vpx3220_fp_read(client, 0xf2) & ~(0x0020); | |
485 | if (data < 0) | |
486 | return data; | |
487 | /* 0x0010 is required to latch the setting */ | |
488 | vpx3220_fp_write(client, 0xf2, | |
489 | data | (input[*iarg][1] << 5) | 0x0010); | |
490 | ||
491 | udelay(10); | |
492 | } | |
493 | break; | |
494 | ||
495 | case DECODER_SET_OUTPUT: | |
496 | { | |
497 | int *iarg = arg; | |
498 | ||
499 | /* not much choice of outputs */ | |
500 | if (*iarg != 0) { | |
501 | return -EINVAL; | |
502 | } | |
503 | } | |
504 | break; | |
505 | ||
506 | case DECODER_ENABLE_OUTPUT: | |
507 | { | |
508 | int *iarg = arg; | |
509 | ||
510 | dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n", | |
511 | I2C_NAME(client), *iarg); | |
512 | ||
513 | vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00)); | |
514 | } | |
515 | break; | |
516 | ||
517 | case DECODER_SET_PICTURE: | |
518 | { | |
519 | struct video_picture *pic = arg; | |
520 | ||
521 | if (decoder->bright != pic->brightness) { | |
522 | /* We want -128 to 128 we get 0-65535 */ | |
523 | decoder->bright = pic->brightness; | |
524 | vpx3220_write(client, 0xe6, | |
525 | (decoder->bright - 32768) >> 8); | |
526 | } | |
527 | if (decoder->contrast != pic->contrast) { | |
528 | /* We want 0 to 64 we get 0-65535 */ | |
529 | /* Bit 7 and 8 is for noise shaping */ | |
530 | decoder->contrast = pic->contrast; | |
531 | vpx3220_write(client, 0xe7, | |
532 | (decoder->contrast >> 10) + 192); | |
533 | } | |
534 | if (decoder->sat != pic->colour) { | |
535 | /* We want 0 to 4096 we get 0-65535 */ | |
536 | decoder->sat = pic->colour; | |
537 | vpx3220_fp_write(client, 0xa0, | |
538 | decoder->sat >> 4); | |
539 | } | |
540 | if (decoder->hue != pic->hue) { | |
541 | /* We want -512 to 512 we get 0-65535 */ | |
542 | decoder->hue = pic->hue; | |
543 | vpx3220_fp_write(client, 0x1c, | |
544 | ((decoder->hue - 32768) >> 6) & 0xFFF); | |
545 | } | |
546 | } | |
547 | break; | |
548 | ||
549 | default: | |
550 | return -EINVAL; | |
551 | } | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static int | |
557 | vpx3220_init_client (struct i2c_client *client) | |
558 | { | |
559 | vpx3220_write_block(client, init_common, sizeof(init_common)); | |
560 | vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1); | |
561 | /* Default to PAL */ | |
562 | vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1); | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | /* ----------------------------------------------------------------------- | |
568 | * Client managment code | |
569 | */ | |
570 | ||
571 | /* | |
572 | * Generic i2c probe | |
573 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
574 | */ | |
575 | static unsigned short normal_i2c[] = | |
576 | { I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4, | |
577 | I2C_CLIENT_END | |
578 | }; | |
1da177e4 | 579 | |
68cc9d0b | 580 | static unsigned short ignore = I2C_CLIENT_END; |
d56410e0 | 581 | |
1da177e4 LT |
582 | static struct i2c_client_address_data addr_data = { |
583 | .normal_i2c = normal_i2c, | |
68cc9d0b JD |
584 | .probe = &ignore, |
585 | .ignore = &ignore, | |
1da177e4 LT |
586 | }; |
587 | ||
588 | static struct i2c_driver vpx3220_i2c_driver; | |
589 | ||
590 | static int | |
591 | vpx3220_detach_client (struct i2c_client *client) | |
592 | { | |
593 | struct vpx3220 *decoder = i2c_get_clientdata(client); | |
594 | int err; | |
595 | ||
596 | err = i2c_detach_client(client); | |
597 | if (err) { | |
598 | return err; | |
599 | } | |
600 | ||
601 | kfree(decoder); | |
602 | kfree(client); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | static int | |
608 | vpx3220_detect_client (struct i2c_adapter *adapter, | |
609 | int address, | |
610 | int kind) | |
611 | { | |
612 | int err; | |
613 | struct i2c_client *client; | |
614 | struct vpx3220 *decoder; | |
615 | ||
616 | dprintk(1, VPX3220_DEBUG "%s\n", __func__); | |
617 | ||
618 | /* Check if the adapter supports the needed features */ | |
619 | if (!i2c_check_functionality | |
620 | (adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) | |
621 | return 0; | |
622 | ||
7408187d | 623 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
1da177e4 LT |
624 | if (client == NULL) { |
625 | return -ENOMEM; | |
626 | } | |
627 | ||
1da177e4 LT |
628 | client->addr = address; |
629 | client->adapter = adapter; | |
630 | client->driver = &vpx3220_i2c_driver; | |
1da177e4 LT |
631 | |
632 | /* Check for manufacture ID and part number */ | |
633 | if (kind < 0) { | |
634 | u8 id; | |
635 | u16 pn; | |
636 | ||
637 | id = vpx3220_read(client, 0x00); | |
638 | if (id != 0xec) { | |
639 | dprintk(1, | |
640 | KERN_INFO | |
641 | "vpx3220_attach: Wrong manufacturer ID (0x%02x)\n", | |
642 | id); | |
643 | kfree(client); | |
644 | return 0; | |
645 | } | |
646 | ||
647 | pn = (vpx3220_read(client, 0x02) << 8) + | |
648 | vpx3220_read(client, 0x01); | |
649 | switch (pn) { | |
650 | case 0x4680: | |
651 | strlcpy(I2C_NAME(client), "vpx3220a", | |
652 | sizeof(I2C_NAME(client))); | |
653 | break; | |
654 | case 0x4260: | |
655 | strlcpy(I2C_NAME(client), "vpx3216b", | |
656 | sizeof(I2C_NAME(client))); | |
657 | break; | |
658 | case 0x4280: | |
659 | strlcpy(I2C_NAME(client), "vpx3214c", | |
660 | sizeof(I2C_NAME(client))); | |
661 | break; | |
662 | default: | |
663 | dprintk(1, | |
d56410e0 | 664 | KERN_INFO |
1da177e4 LT |
665 | "%s: Wrong part number (0x%04x)\n", |
666 | __func__, pn); | |
667 | kfree(client); | |
668 | return 0; | |
669 | } | |
670 | } else { | |
671 | strlcpy(I2C_NAME(client), "forced vpx32xx", | |
672 | sizeof(I2C_NAME(client))); | |
673 | } | |
674 | ||
7408187d | 675 | decoder = kzalloc(sizeof(struct vpx3220), GFP_KERNEL); |
1da177e4 LT |
676 | if (decoder == NULL) { |
677 | kfree(client); | |
678 | return -ENOMEM; | |
679 | } | |
1da177e4 LT |
680 | decoder->norm = VIDEO_MODE_PAL; |
681 | decoder->input = 0; | |
682 | decoder->enable = 1; | |
683 | decoder->bright = 32768; | |
684 | decoder->contrast = 32768; | |
685 | decoder->hue = 32768; | |
686 | decoder->sat = 32768; | |
687 | i2c_set_clientdata(client, decoder); | |
688 | ||
689 | err = i2c_attach_client(client); | |
690 | if (err) { | |
691 | kfree(client); | |
692 | kfree(decoder); | |
693 | return err; | |
694 | } | |
695 | ||
696 | dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n", | |
697 | I2C_NAME(client), client->addr << 1); | |
698 | ||
699 | vpx3220_init_client(client); | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | static int | |
705 | vpx3220_attach_adapter (struct i2c_adapter *adapter) | |
706 | { | |
707 | int ret; | |
708 | ||
709 | ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client); | |
710 | dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n", | |
711 | __func__, ret); | |
712 | return ret; | |
713 | } | |
714 | ||
715 | /* ----------------------------------------------------------------------- | |
716 | * Driver initialization and cleanup code | |
717 | */ | |
718 | ||
719 | static struct i2c_driver vpx3220_i2c_driver = { | |
604f28e2 | 720 | .driver = { |
604f28e2 LR |
721 | .name = "vpx3220", |
722 | }, | |
1da177e4 LT |
723 | |
724 | .id = I2C_DRIVERID_VPX3220, | |
1da177e4 LT |
725 | |
726 | .attach_adapter = vpx3220_attach_adapter, | |
727 | .detach_client = vpx3220_detach_client, | |
728 | .command = vpx3220_command, | |
729 | }; | |
730 | ||
731 | static int __init | |
732 | vpx3220_init (void) | |
733 | { | |
734 | return i2c_add_driver(&vpx3220_i2c_driver); | |
735 | } | |
736 | ||
737 | static void __exit | |
738 | vpx3220_cleanup (void) | |
739 | { | |
740 | i2c_del_driver(&vpx3220_i2c_driver); | |
741 | } | |
742 | ||
743 | module_init(vpx3220_init); | |
744 | module_exit(vpx3220_cleanup); | |
745 | ||
746 | MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video encoder driver"); | |
747 | MODULE_AUTHOR("Laurent Pinchart"); | |
748 | MODULE_LICENSE("GPL"); |